文章基本信息

标题：Enhancement of the Security of a Digital Image using the Moduli Set
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作者：S. Alhassan ; K.A. Gbolagade
期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2013
卷号：2
期号：7
页码：2223-2229
出版社：Shri Pannalal Research Institute of Technolgy
摘要：Digital images have found usage in many applications. These images may contain confidential information and need to be protected when stored on memory or transmitted over networks. Many techniques have been proposed to deal with this security issues. In this paper, we propose a new security enhancement scheme for digital images. The scheme employs two methods: Residue Number System (RNS) to Decimal (R/D) encoding and decoding using the moduli setand a modified Arnold transform algorithm. The encryption process uses RNS to Decimal (D/R) converter (encoder) to decompose a plain image into three residual images. The residual images are fused together and encrypted using the modified Arnold transform. In the decryption process, the modified Arnold transform is used to decrypt the cipher image which is then decomposed into three residual images. An R/D converter (decoder) is then used to recover the plain image. The proposed scheme is simulated on digital images of different sizes using MATLAB. The obtained results show that the scheme can effectively encrypt and decrypt images without lost of any inherent information. The scheme also offers firm resistance to statistical attacks such as histogram, brute-force, correlation coefficient and key sensitivity. It can be applied to any shape of image and allow unlimited number of iterations to be performed as opposed to best known state of the art.
关键词：D/R encoder; R/D decoder; residual image; ; Residue Number System; Arnold transform